Kontron COMe Starterkit Eval T2 Bedienungsanleitung Seite 158

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Power and Reset
3.2.3. ATX and AT Power Sequencing Diagrams
A sequence diagram for an ATX style boot from a soft-off state (S5), initiated by a power button
press, is shown in Figure 64 below.
A sequence diagram for an AT style boot from the mechanical off state (G3) is shown in Figure
65 below below.
In both cases, the VCC_12V, VCC_5V and VCC_3V3 power lines should rise together in a
monotonic ramp with a positive slope only, and their rise time should be limited. Please refer to
the ATX specification for more details.
PICMG
®
COM Express
®
Carrier Board Design Guide Rev. 2.0 / December 6, 2013
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